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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v11.i1.80
pages 95-102

INVESTIGATION OF A DUSTY RF PLASMA TORCH JET

Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France
Sergey V. Dresvin
Laboratory of Electrotechnological and Plasma Installation of Polytechnic Institute -SPb State Polytechnical University, 29 Polytechnicheskaya Str., 195251 Saint-Petersburg, Russia
S. G. Zverev
St. Petersburg State Polytechnic University, 29 Politekhnicheskaya Str., St. Petersburg, 195251, Russia

RÉSUMÉ

The goal of this study is the calculation of the optimal degree of plasma jet loading and the investigation of heat transfer in a dusty jet. Therefore we investigated the evaporation of particles, the interaction between particles and the influence of particles screening.
The subject of investigation is a plasma torch jet. The power of the plasma jet is 25 kW, the frequency 5.28 MHz, the inner diameter of plasma torch is 54 mm. The plasma gas is air, and the gas flow rate is 80 1/min. Powders for investigation are silica and silicon.
The procedure includes the simultaneous solution of the equation of motion and heating of the particles, together with the plasma equation of energy and masses conservation. This procedure is based on the method of velocity and heating calculation of single solid particle in plasma jet, which gives results close to experimental data.
As a result we have calculated the optimal degree of the plasma jet loading, which give possibility to reach effective process of particles treatment. We have taken into account evaporation and interaction between particles in our calculation.


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